CApecitabine Prior to TUmor Resection in Ent Oncology (CAPTURE)

head and neck squamous cell carcinoma (HNSCC) is a type of cancer that affects areas such as the mouth, throat, and voice box. Despite medical progress, little has changed in the care for patients with HPV-negative cancer. The standard care involves surgery followed by radiation or chemotherapy if needed. However, delays in starting treatment - especially beyond six weeks - are linked to worse outcomes. Many patients also experience cancer returning within two years, often making it harder to treat. This study aims to improve outcomes by giving patients a short course of capecitabine, a chemotherapy pill, before surgery. Capecitabine is easier to tolerate than traditional intravenous chemotherapy and has shown promising results in shrinking tumors. Researchers believe that starting this oral treatment early could reduce delays, shrink tumors, make surgery less complex, and improve survival. The clinical trial will randomly assign patients with newly diagnosed stage III or IVa HPV-negative head and neck cancer to receive either standard care or capecitabine before surgery. Surgery will be performed within six weeks of diagnosis, followed by additional therapy as needed. The study will measure how well the tumor responds under the microscope after surgery, how much it shrinks on scans, the safety of the treatment, and cancer-free survival at two years. It will also explore biological markers linked to treatment response. If successful, this approach could offer a simpler, faster, and more effective way to treat head and neck cancer, leading to earlier treatment, less invasive surgery, and improved patient outcomes. The study plans to include about 62 patients to evaluate the benefits of this new treatment strategy